04-11-2018 02:08 AM
Not sure whether your M4P songs are from iTunes or not. If they are iTunes songs, you may need a special DRM removal tool. Anyway, you are suggested to try TunesKit DRM Audio Converter as it supports both DRM-ed and no-DRM M4P songs. It can losslessly convert your M4P files to MP3 on both Mac and Windows. Good luck.